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/*
* Copyright 2019-2025 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include "apps.h"
#include "app_params.h"
/* Maximum number of bytes that will be output for an octet string body */
#define MAX_OCTET_STRING_OUTPUT_BYTES 24
static int describe_param_type(char *buf, size_t bufsz, const OSSL_PARAM *param)
{
const char *type_mod = "";
const char *type = NULL;
int show_type_number = 0;
int printed_len;
switch (param->data_type) {
case OSSL_PARAM_UNSIGNED_INTEGER:
type_mod = "unsigned ";
/* FALLTHRU */
case OSSL_PARAM_INTEGER:
type = "integer";
break;
case OSSL_PARAM_UTF8_PTR:
type_mod = "pointer to a ";
/* FALLTHRU */
case OSSL_PARAM_UTF8_STRING:
type = "UTF8 encoded string";
break;
case OSSL_PARAM_OCTET_PTR:
type_mod = "pointer to an ";
/* FALLTHRU */
case OSSL_PARAM_OCTET_STRING:
type = "octet string";
break;
default:
type = "unknown type";
show_type_number = 1;
break;
}
printed_len = BIO_snprintf(buf, bufsz, "%s: ", param->key);
if (printed_len > 0) {
buf += printed_len;
bufsz -= printed_len;
}
printed_len = BIO_snprintf(buf, bufsz, "%s%s", type_mod, type);
if (printed_len > 0) {
buf += printed_len;
bufsz -= printed_len;
}
if (show_type_number) {
printed_len = BIO_snprintf(buf, bufsz, " [%d]", param->data_type);
if (printed_len > 0) {
buf += printed_len;
bufsz -= printed_len;
}
}
if (param->data_size == 0)
printed_len = BIO_snprintf(buf, bufsz, " (arbitrary size)");
else
printed_len = BIO_snprintf(buf, bufsz, " (max %zu bytes large)",
param->data_size);
if (printed_len > 0) {
buf += printed_len;
bufsz -= printed_len;
}
*buf = '\0';
return 1;
}
int print_param_types(const char *thing, const OSSL_PARAM *pdefs, int indent)
{
if (pdefs == NULL) {
return 1;
} else if (pdefs->key == NULL) {
/*
* An empty list? This shouldn't happen, but let's just make sure to
* say something if there's a badly written provider...
*/
BIO_printf(bio_out, "%*sEmpty list of %s (!!!)\n", indent, "", thing);
} else {
BIO_printf(bio_out, "%*s%s:\n", indent, "", thing);
for (; pdefs->key != NULL; pdefs++) {
char buf[200]; /* This should be ample space */
describe_param_type(buf, sizeof(buf), pdefs);
BIO_printf(bio_out, "%*s %s\n", indent, "", buf);
}
}
return 1;
}
/* Output the body of a UTF8 string which might not be zero terminated */
static void print_param_utf8(const char **s_ptr, size_t len)
{
const char *s;
if (s_ptr == NULL) {
BIO_puts(bio_out, " ptr null\n");
return;
}
if ((s = *s_ptr) == NULL) {
BIO_puts(bio_out, " null\n");
return;
}
BIO_puts(bio_out, "'");
if (len > 0)
BIO_write(bio_out, s, (int)len);
BIO_puts(bio_out, "'\n");
}
/* Output the body of an OCTET string */
static void print_param_octet(const unsigned char **bytes_ptr, size_t len)
{
size_t i;
const char *tail = "\n";
const unsigned char *bytes;
BIO_printf(bio_out, "<%zu bytes>", len);
if (bytes_ptr == NULL) {
BIO_puts(bio_out, " ptr null\n");
return;
}
if ((bytes = *bytes_ptr) == NULL) {
BIO_puts(bio_out, " null\n");
return;
}
if (len == 0) {
BIO_puts(bio_out, "\n");
return;
}
if (len > MAX_OCTET_STRING_OUTPUT_BYTES) {
len = MAX_OCTET_STRING_OUTPUT_BYTES;
tail = "...\n";
}
BIO_puts(bio_out, " ");
for (i = 0; i < len; i++)
BIO_printf(bio_out, "%02x", bytes[i]);
BIO_puts(bio_out, tail);
}
void print_param_value(const OSSL_PARAM *p, int indent)
{
int64_t i;
uint64_t u;
printf("%*s%s: ", indent, "", p->key);
switch (p->data_type) {
case OSSL_PARAM_UNSIGNED_INTEGER:
if (OSSL_PARAM_get_uint64(p, &u))
BIO_printf(bio_out, "%llu\n", (unsigned long long int)u);
else
BIO_printf(bio_out, "error getting value\n");
break;
case OSSL_PARAM_INTEGER:
if (OSSL_PARAM_get_int64(p, &i))
BIO_printf(bio_out, "%lld\n", (long long int)i);
else
BIO_printf(bio_out, "error getting value\n");
break;
case OSSL_PARAM_UTF8_PTR:
print_param_utf8((const char **)p->data, p->return_size);
break;
case OSSL_PARAM_UTF8_STRING:
print_param_utf8((const char **)&p->data, p->return_size);
break;
case OSSL_PARAM_OCTET_PTR:
print_param_octet((const unsigned char **)p->data, p->return_size);
break;
case OSSL_PARAM_OCTET_STRING:
print_param_octet((const unsigned char **)&p->data, p->return_size);
break;
default:
BIO_printf(bio_out, "unknown type (%u) of %zu bytes\n",
p->data_type, p->return_size);
break;
}
}
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